The use of the word "accents" over five chapters caught my attention. I'm not accustomed to it being used as a synonym for "tone of voice," but I like it.

I've listed all as follows (haven't yet figured out how to place selected words in bold):

Chapter 41
"Wholly inattentive to her sister's feelings, Lydia flew about the house in restless ecstacy, calling for every one's congratulations, and laughing and talking with more violence than ever; whilst the luckless Kitty continued in the parlour repining at her fate in terms as unreasonable as her accent was peevish.

"Wickham's alarm now appeared in a heightened complexion and agitated look; for a few minutes he was silent, till, shaking off his embarrassment, he turned to her again, and said in the gentlest of accents --"

Chapter 43
[Mr. Darcy]" Nor did he seem much more at ease: when he spoke, his accent had none of its usual sedateness; and he repeated his enquiries as to the time of her having left Longbourn, and of her stay in Derbyshire, so often, and in so hurried a way, as plainly spoke the distraction of his thoughts."

Chapter 44
[Elizabeth observing Mr. Darcy upon introduction to Georgiana] "It was not often that she could turn her eyes on Mr. Darcy himself; but, whenever she did catch a glimpse, she saw an expression of general complaisance, and in all that he said she heard an accent so far removed from hauteur or disdain of his companions,as convinced..."

Chapter 46
[Elizabeth asking servant to fetch Gardiners] "Calling back the servant, therefore, she commissioned him, though in so breathless an accent as made her almost unintelligible, to fetch his master and mistress home instantly."